This is the TRN Kirin. It's an in-ear monitor (IEM) featuring a 14.5mm large-diaphragm planar magnetic driver. Sound tuning is possible with three types of interchangeable nozzles. The included 8-core silver-plated OFC cable has interchangeable plugs (3.5mm, 2.5mm, and 4.4mm), making it compatible with various playback environments. I've only listened to it with my own eartips and have kept it in like-new condition. However, it's too good for me, so I hope someone who needs it will use it. Thank you.